Featured contributor BSc Economics; CFA Level II candidate; 10+ years in consumer-finance publishing.

Nadia Almasri

Editorial Lead, Personal Finance

0 calculators 0 articles Member since Jun 2026

About

Nadia leads the personal finance desk and has spent over a decade writing consumer-facing explainers for banks, fintechs, and independent publications. She is obsessive about sourcing, formulas, and making the math feel approachable without dumbing it down.

She reviews every loan, mortgage, and budgeting calculator before it ships and is responsible for the editorial checklists the rest of the team uses.

Areas of expertise

Mortgages Consumer loans Budgeting Retirement planning

Education & credentials

BSc Economics — King's College London
MBA — IE Business School

Finance

Profitability Index Calculator

Compute the profitability index (a.k.a. PV index) of a project from the present value of its future cash flows and the i...

basic

18,933 4.0 1 min

Health

Body Surface Area — Du Bois Formula Calculator

Estimates body surface area using the Du Bois formula: BSA (m²) = 0.007184 × weight(kg)^0.425 × height(cm)^0.725. Used f...

basic

9,741 4.7 1 min

Finance

Balloon Loan Final Payment Calculator

Compute the final balloon payment on a partially-amortising loan. The borrower pays a smaller fixed monthly payment M (i...

basic

24,995 4.1 1 min

Sports

Archery Arrow Trajectory & Drop Calculator

Calculates arrow drop and time of flight at a given target distance from muzzle velocity and launch angle, ignoring drag...

basic

13,167 4.5 1 min

Math

Simpson's Rule Composite Integral Calculator

Approximates a definite integral using the composite Simpson's 1/3 rule from a table of function values at equally-space...

basic

9,757 3.9 1 min

Everyday Life

Business Days Calculator

Count the number of business days (Monday–Friday, inclusive) between two dates, with the option to subtract a manual cou...

basic

9,968 4.0 1 min

Physics

Battery Amp-Hour & Runtime Calculator

Calculates battery runtime from capacity (Ah), load current, depth of discharge, and battery efficiency.

basic

23,672 4.5 1 min

Finance

Stock Beta from Covariance and Variance Calculator

Compute a stock's beta directly from the covariance of its returns with market returns and the variance of the market: β...

basic

19,235 5.0 1 min

Finance / Budgeting

Income Tax Calculator

Estimate federal-style income tax using a simplified progressive bracket system, and see your effective rate alongside t...

Featured basic

3,921 4.8 1 min

Finance / Retirement

Retirement Savings Calculator

Estimate retirement balance at age 65 based on current savings, contributions, and expected return.

Featured basic

9,846 4.2 1 min

Sports

Fat-Burning Target Heart Rate Zone Calculator

Calculates the heart rate range for the fat-burning zone (60–70% HRmax) and aerobic zone (70–80% HRmax), using age-predi...

basic

13,277 4.7 1 min

Finance / Mortgage

Mortgage Qualification by DTI Calculator

Compute the maximum monthly housing payment a lender will allow from your monthly gross income, a target front-end DTI r...

basic

14,380 4.3 1 min

Showing 301 to 312 of 384 results

tutorial Finance

The 50/30/20 Rule, Used By Real People: A Budgeting Primer

Needs, wants, and savings at 50/30/20 is a starting point — not a rulebook. Here is how to adapt it when your life doesn't fit neatly into t...

Nadia Almasri

May 15, 2026 3 min

guide Finance

How to Think About Your Mortgage: A Plain-English Guide

A calm, jargon-free walkthrough of what actually drives your monthly mortgage payment — and how to make the number smaller.

Nadia Almasri

Apr 26, 2026 3 min

report Finance

The State of Consumer Calculators in 2026: A Short Report

We pulled usage data across our 30 most-visited calculators to understand how readers actually use consumer finance tools. Findings, caveats...

Nadia Almasri

Feb 12, 2026 3 min

explainer Finance

Compound Interest Is Slow Until It Isn't: What 20 Years of $250 a Month Actually Looks Like

The same $250 a month looks unremarkable for a decade and then suddenly dominates the chart. Here is why compounding behaves that way.

Nadia Almasri

Jan 23, 2026 3 min

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Browse categories

Nadia Almasri

Profitability Index Calculator

Body Surface Area — Du Bois Formula Calculator

Balloon Loan Final Payment Calculator

Archery Arrow Trajectory & Drop Calculator

Simpson's Rule Composite Integral Calculator

Business Days Calculator

Battery Amp-Hour & Runtime Calculator

Stock Beta from Covariance and Variance Calculator

Income Tax Calculator

Retirement Savings Calculator

Fat-Burning Target Heart Rate Zone Calculator

Mortgage Qualification by DTI Calculator

The 50/30/20 Rule, Used By Real People: A Budgeting Primer

How to Think About Your Mortgage: A Plain-English Guide

The State of Consumer Calculators in 2026: A Short Report

Compound Interest Is Slow Until It Isn't: What 20 Years of $250 a Month Actually Looks Like